I've known some 4.0 gpa people that were dumb as a box of rocks and had no people skills on top of it.
The valedictorian of my hgh school class, when in drivers ed with him, was asked (with the car running and the hood open) "Your car is overheating, where would you put the hose to cool the engine down before shutting it off?" He pointed to the air intake hole on the air cleaner.......
As for people skills, well, lets not go there.